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NI. GOLDBECK.

INTERNAL CDMBUSTION ENGINE.

APPLICATION FILED MAR. 26. ISHSA .Patented May 20, 1919.

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M. GOLDBECK.

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APPLICATION fILED MAR. 26. 1918.

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APPLICATION FILED MAR. 26 1918.

Patented May 20, 1919.

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- RNEYs 50 V--aplugs 4and the walls of the cylinder bores `lVIIEtTIliI' GOLDBECK, 0F KANSAS CITY, MISSOURI.

INTERNAL-COMBUSTION ENGINE.

Specification of Letters Patent.

Patented May 20, 1919.

Application led March 26, 1918. Serial No. 224,816.

To all whom it may concern:

Be it known that I, MARTIN GOLDBECK a citizen of the United States, at present residing aft Kansas City, in the county of Jackson `and State of Missouri, have invented new and useful Improvements in lnrteruel-Combustion Engines, of which the following is a specification.

My invention, which relates to the art of internal combustion engines, has for its principal object to provide'an engine of the rotary valve type, which will be practical and workable and in which adequate and practical provision is made for the proper lubrication of the moving parts of the valve structureand in which the parts are so designed and related that they may be readily reached for examination or repairs.

Another object of my invention is to provide a rotary valve engine with a detachable cylinder head, the same being so designed that bysimply removing the `cylinder head, the valve will berexposed and may be taken out as a unit to expose the valve seats.

A further object is to provide the engine with removable valve seat plugs of such design and construction that they may be easily lifted out so as to provide a large passageway into the combustion chamber, whereby the removal of carbon from the combustion chamber walls and from the piston head can be conveniently effected.

It h-as also been an object of the invention to provide a removiable-cylinder-headrotatable valve engine of such construction that the intake ports are cast in the cylinder block and the exhaust ports. are cast'in the head block so that in removing the head for the purpose of cleaning out the carbon or for other reasons, no disconnection of the inta-ke manifold or disturbance of the carbureter connections need be made and the exhaust manifold can 'be removed as a unit with fthe cylinder head, thereby 'reducing the time and labor necessary to overhaul the engine.

Again it has been on'e of the objects of my invention to make provision for keeping a gas tight contact between the valve seat plugs and Ithe valve and between the seat in whicl 'they fitsoas to maintain compression as well as to provide for uniform `suc-- tion on the intake stroke.

My invention provides means whereby the internal pressure on the valve seat plugs may be, at all times, positive and even, so that the seat'will be free to make gas tight Contact with the valve, especially during the compression and working strokes. I4 urthermore, it has been the object of the invention to provide a rotary valve engine in which .the design of the parts is so made` that the valve and valve seat elements are.

-stru-ction, combination and arrangement 'of parts, all of which will be first fully described and then be specifically pointed oiit in the appended claims, reference being had to the accompanying dra-wings, in which 1f;

Figure l is a side elevation and part section of a tour cylinder engine embodying my invention.

Fig. 2 is an enlarged vertical longitudinal section (a part being broken away) of 'the cylinder block and head parts,etc., of an engine embodying the invention. Fig. 3 is lan enlarged detaibview of a portion of the invention.

Fig. L is a cross section on the line 4 4 of Fig. 3.

Fig. 5 is a, cross of Fig. 3. i,

Fig. 6 is a. cross section on the `line-,6-6 of Fig. 3. i

Fig. 7 is a detail perspective view` of one of the valve seat plugs.

F 1g. 8 is an inverted pla-n view of oneof the lubricant distributing plates.

Fig. 9 is a plan View of the valve. Fig. 10 is an inverted plan View of the cylinder head. i

Fig. l1 is a plan view of the top of the section on the line cylinder block.

Fig. 12 is a. cross, section showing the valve seait, theval-ve, the lubricant distributing plate Vand the cylinder head separated and showing the facility with which the several parts maybe assembled.

Figs. 13 to 16 inclusive are vertical cross sections through the respective cylinders showingthe cycle of operation.

In the' drawings in which like numerals `and letters 'of reference indicate like parts in all, of the figures, l represents the crank casing, 2 the crank shaft,' 3 the connecting rods, 4 the oil pump, 5 the oil sump, 6 the oil baffle, 7 the main oil distributing duct and 8 the pistons, all of which may be of any approved construction, as per se they form no part of the present invention claimed.

9 designates the cylinders which are preferably cast en bloc and are water jacketed as at 10. They also have compression spaces 11 and a head wall 12 which is of a stepped form in end elevation or vertical cross -section so as to provide two surfaces 13-13 in different horizontal planes, which `are machined to receive the corresponding surfaces 34--34 of the cylinder head.

The head wall 12 also has a concaved valve seat surface 16, while the removable cylinder head is provided With a similar Valve seat surface 34 in its Wall 32.

The cylinder head-wall has shoulders 14 and 15 and the wall of the cylinderhead is similarlyshouldered, where necessary, to

lit the cylinder head-Wall.

The intake ports 17 are preferably cast integrally with the cylinders, While the exhaust ports 36 are cast With the cylinder head, the headbeing Water acketed as at 33.

It will be observed that the cylinder head- Wall is located some distance above the compression space 11 and it has bores 18-20 for each cylinder, which bores have seats 19 and y 24-24 at the top of the plug which are in bore and the plug is provided with a suitable gasket 3l which rests between the shoulders 19 and '30. The plug isalso provided With a packing ring groove 28', in which a piston ring of the usual. construction is located.

Suitable gaskets 255 are provided between the opposing surfaces of the cylinder headwall and the cylinder head.

i,ecaose 36 designates the exhaust ports which are preferably cast integrally with the cylinder head, the head' havingirecesses 37 adjacent to the ports 36 to receive t-he projecting part 39 of the lubricant distributing plate 40,

lwhich plate 40 rests on the cylinder head cesses in'theperphery of the valve and the valve is provided with an axial bore 51 through which the lubricant from the duct 7 is fed and distributed through l-ateral ducts A -or leads 53 to the periphery of the valve,

the location of the leads 53 being such. that the distribution of the lubricant will occur in a n annular path, crossing the valve engaging part of the plug 22 to the line ff contact between the plug and the cylinderv bore, so that lubricanumay be fed 'betweenthe plug 22 to the cylinder borefto effect a gas tight seal.

Furthermore, the plate 40 is provided with suitably disposed lubricant distributing grooves 40X, see Fig. 8, into Which the' lubricant is fed from the leads 53 and distributedover the contacting surface ofthe valve 45 and plate 40, such of the 'lubricant as feeds endwise past the plate 40 functions to lu'bricate the valve surface in the space between ad]acent plates 47 designates the trunnion or bearing ends of the valve 45, against; the front one of vwhich is formeda'collar 48, from which the' end 49 on which the valve gear 63 is located, projects. I .Y

The valve is driven through a silent chain 64 passing over the gear 643 and a gear on the crank shaft. While I prefer this method of driving the valve, yet it should be under-V stood that any of the other standard methods of practice may bef employed in lieu thereof.

vThe valve 45 is counterbored, at one end, at 50 to receive the end-of the duct 7 by which lubricant is delivered into the duct 51.,

a gland 56 on the cap plate 54 servingto effect a lubricant tight joint, thelate 54 being secured at 55 over the end of t e valvev structure to the cylinder and the cylinder head units.

57 and 58 designatethe two halves lof the bearings for each end of the valve 45 inwhich bearings, the bearing portions' 47 of the valve are `journaled, there being oil leads 52 from the ducts 51 to the respective bear-A ing surfaces. .The bearings 57 and 58 are secured together and to the cylinder structureby cap. screws 59 that pass through lugs on the bearings 57 and 58 and are tapped at 71 into the cylinder head-wall. The cylinder head has recesses 60 for the screw heads so that the cylinder head can be removed without disturbing the screws 59 and in order that the impacting blows on the sections 58 may be distributed to the cylinder head and thus relieve the screws 59, screws 6l with interposed fiber or other hard disks 62 are provided, whereby, regardless of ,any variation in the thickness of the cylinder head gasket, the screws 61 can be tightened down to transmit the impacts from the bearing sections 58 to the cylinder head and fthus distributing the same therethrough, thereby adding to the life of the engine and aiding in maintaining the gas tight contact necessary between the valve and valve seats.

65 designates the water passages in the cylinder head and in the cylinder which register with one another to permit azcirculation of water from the cylinder jacketto the head jacket, as is the usual practice,and 6G designates the screw holes in which the screw bolts 72 that screw the cylinder head to the cylinder are tapped. S

67 designates the intake manifold and 68 the intake from the carbureter (sec dotted lines Fig. 11) and G9 designates the passageway that communicates with the in'takc! manifold 67, at its end, and a pair of adjacent intake ports for the adjacent cylinders, while 7 0 designates the exhaust manifold which is common to all of the exhaust orts.

The cycle of operation is indicated in Figs. 13 to 16, inclusive, the parts being positioned in just at the commencement of the suction stroke, the exhaust port just having closed and the intake port being about to' open. ,i

Fig. 14 indicates the position of parts at the end of the suction stroke, the exhaust port being closed and the intake port. just about closed.

Fig. 15 shows the position of the parts on completion 'of the compression stroke and just at the time the explosion occurs.

Fig. 16 indicates the position of the parts at the end ofthe working stroke of the p'iston, the exhaust port beginningt open and opening fully as the piston rises to expel the charge. I

It will be noticed from the foregoing that by constructing the engine parts, especially the valve, the cylinder head, the` head end of the cylinders and the valve seat members, as shown and described, and providing the special lubricating arrangement that I have, provides, a practical and, I believe, effective construction for the purposes intended.

It will be noted that on the compression and working strokes of the piston, the valve seat members will be held up against the valve with sutiicient pressure contalct 'to maintain a gas tight engagement and prevent leakage which would cause loss of compression and loss of power.

I `urthermore, by constructing the scat member, as shown and described, the seat will be held against the valve on the suction stroke also and the packing will insure a gas tight connection between the valve seat member and the cylinder.

It will also be noted that the valve engaging surface of the seat member does not extend the full diameter of the valve seat member and that small segments of the seat are exposed in both ports. This is done so that the internal pressure may, at all times, be positive and, furthermore, the seat does not have to be milledto a feather edge, which would perhaps, be impractical.

It is also to be noted that the lower part. of the seat is cut away on a line approximately -15 degrees with the vertical side wall. This angle may, of course, be varied, and although I have arranged the inside area in such a manner that there shall not be too much pressure on the seat so that it would exert a drag on the valve rotor, by increasing this angle to 00 degrees, the inside exposed area will be lessened and pressure reduced.

It will also be noted that the valve rotor is entirely free floating, except for the contact with the valve seat and the slight drag of 100 the lubricating plate.

The rest of the housing should be made with not less than 0.0015 inch clearance on the bottom side and about 0.0025 inch clearance on top; any slight variation in location 105 of the detachable head will make no difference, since the bearings for the valve are secured to the cylinder casing and by using the reinforcing screw on hard rubber or fiber pad, the cylinder head absorbs most of the 110 pressure.

In practice, I prefer to use babbitt lined bronze bearings for the valve owing to the pounding these bearings will receive.

It will be also noted thatby my design, ample port area is provided in the valve and valve seat member, to render the action of the engine most effective and e'licient.

Of course, the engine ca-n be made in any desired size with any desired number of cylinders and I, of course, do not wish to be limited to any particular details ol construction beyond what is made necessary by the prior art and the seppe of the appended claims. J`

While I have described the preferred'construction of the invention, I also desire it understood that numerous changes in the construction, arrangement, proportions of parts, &c. can be made without departing 130 Verating with said ducts and said valve Seat plugfory controlling the. admission and exhaust functions of the engine, said plug having surface portions exposed to atmospheric pressure through the inlet and exhaust ducts.

2. In an internal combustion engine, a cylinder having a head-wall provided with a bore in-communication with the piston chamber, a' valve yseat plug said bore, said plug having a passage, a cylinder head secured over the cylinder head-wall, inlet and exhaust ducts adapted to communicate with said bore and arotata'ble valve between the cylinder head and the head-wall .and cooperating with said ducts and s aid valve seat plug for controlling the admission and 'exhaust func-tions ofthe engine, and means for lubricating the relatively movable surfaces of said valve and said seat-plug, said plug having surface areas Aexposed tothe at- Qingsphere through the inlet and exhaust `3L In an internal combustion engine, a cylinder having ahead-wall provided with a -bore communicating with the piston chambei", a valve seat plug in said bore, said I fiplug having a passage, a cylinder head sef' `cured over the 'cylinder head-wall, inlet and exhaust'l rducts adapted to communicate with -said bore, a` rotatable valve between the cylinder head' and the head-Wall and cop- `erating with said ducts and said valveiseat @plug for controlling the admission and exhaust functions of the engine, and means y escapes a removable valve seat plug held in said bore and itself having a passage controlled by said valve, said plug having a predetermined area exposed to atmospheric pressure.

5. In yan 'engine of the class described, a cylinder having a pistonjdhamber and a head-wall with a bore thriigh the headwall, said cylinder havingedp intake port above the bore, aA cylinder head detacliably fitted over/said cylinder hearlaall and having an exhaust port, a rotatai? valve interposed between the cylinderlriead and the cylinder head-wall to conti'll] the passage between saidgbore and said port, said head and said -head-wall vrespectively having` valvereceiving recesses for said valve, a removable valve seat plug held in said bore and itself having a passage controlled by said valve, said plug having a predetermined area exposed to atmospheric pressure, and means for effecting a gas-tig t engagement between said lplug and saifd val-ve Iand kbetween said plugand the wall of the bore in which it isfitted. u

6. In an engine of the class described, a cylinder having a piston chamber and a head-wall with a boi-e through the licadwall, said cylinder having an intake port above the bore, -a cylinder head detachably fitted over. said cylinder head-wall and having an exhaustport, a rotatable valve in-. terposed between the cylinder head and the cylinder head-wall to control ythe passagel between said bore and sai-d port, said head `and said head-wall respectively having valve receiving recesses for said valve, a removable valve seat plug held in said bore and itself having a passage controlled by said valve, said plug having a predetermined area exposed to atmospheric pressure, means for effecting a gas-tight engagement between said plug and said valve and 'between said plug-.and the waitof the Ibore inwhich it is tted, said last named means includingmechanism for feeding oil through said/valve and distri-butin the same over the relatively movable sur aces.

f0I' maintaining fLmOSPhBIC PIGSSIIes 7.In an engine of the class described, a against a predetermined area of one end of fitted over said cylinder head-wall and having an exhaust port, a rotatable valve interposed between tlie cylinder head and cylinder head-wall to control .the passage between said borc and said port, said head and said .Y head-wall respectively having l valve receiving recesses for said valve, and

cylinder having a piston chamber and a head-wall with a bore through the headwall,said cylinder having an intake port above the bore, a cylinder head detachably ics fitte'l over said cylinder head-wall and liaving .1an exhaust port, a rotatable valve interposedbetween the cylinder head and the i cylinder head-wall to control ythe passage between said bore and said port, said headl and said head-wall respectively 'having valve receiving recesses for said valve, a removable valve seat plug located in said laire, said plug having a tissage controlled by said valve, said plug aving a predetermined arca exposed to atmospheric pressure, a packing ring carried h v said plug to engage l posedbetween the cylinder head and cylinf the wall of the bore, and means for supplying lubricant to the relatively movable surfaces of the valve and plug.

8. In an engine of the class described, a cylinder having a piston chamberand a head-wall with a bore through the headw-all, said cylinder having an intake port above the lbore, a cylinder head detachably fitted over said cylinder head-wall and having an exhaust port, a rotatable valve interder head-wall to control the assage between said bore and said port, said head and said head-wall respectively having valve receiving recesses for said valve, said cylinder head having `a chamber, a lubricant distributing plate in said chamber, and means hold-` ing said plate to embrace said valve, and means for supplying lubricant to the relatively movable surfaces of said valve and plug.

9. In an engine of the class described, a cylinder having a piston chamber and a head-wall with a bore through the headwall, said cylinder having an intake port above the bore, a cylinder head detachably fitting over said cylinder head-wall and having an exhaust port, a rotatable valve interposed between the cylinder head and cylinder head-wall to control the passage between said bore and said port, said head and said head-wall respectively having valve receiving recesses for, said valve, a removable valve seat plug located in said bore and having a passageway controlled by said valve, a packi ing ring around said plu to engage the wall of the bore, said cylinder head having a chamber, a lubricant distributing plate in said chamber, and means holding said plate to embrace said valve, and means .for supplying lubricant to the relatively movable surfaces of said valve and plug.

10. In an engine of the class described, a cylinder having a piston chamber and a head-wall with a bore through the head- Wall, said cylinder having an: intake port above the bore, a'cylinder head detachably fitted over said cylinder head-wall and having an exhaust port, a rotatable valve interposed between the cylinder head and cylinder head-Wall to control the passage between said bore and said port, said head and said head-wall respectively having valve receiving recesses for said valve, bearing members for said valv'e,.means removably securin said bearing members to the cylinder W iereby said head can *be removed without disturbing the position of said valve with relation to the cylinder, and means carried b the cylinder head to engage said valve caring whereby the impact of the valve on the bearing may be transmitted to thehead.

1l. In an engine of the class described, a

ingrecesscs for said valve, said cylinder head having a chamber, a lubricant distributng plate in said chamber, means holding said late to embrace said valve, means for supp ying lubricant to the relatively movable surfaces of said valve and plug, said distributing plate having a port to register with said exhaust port and extending around over the valve from the exhaust port to the intake port.

l2. In an engine oi the class described, a cylinder having a piston chamber and a head-Wall with afbore through the head-wall, said cylinder having an intake port above the bore, a cylinder head detachably fitted over said cylinder head-Wall and having an exhaust port, a rotatable valve interposed between the cylinder head and -cylinderhead-wall to control the passage between said bore and said port, said head and said headwall respectively having valve receiving recesses for said valve, a removable valve seat plug located in said bore and having a passageway controlled by said valve, packing interposed 'between the plug and the wall of the bore, said cylinder head having a chamber, a lubricant distributing plate in said chan'lber, and means holding said plate to embrace said valve.

13. In an engine of the class described, a cylinderhaving a piston chamber and a head-wall with a bore throughl the headwall, said cylinder having an intake port above the bore, a cylinder head detachably aitted over said cylinderhead-wall and having an exhaust port, a rotataible valve interposed between the cylinder head and cylinder head-Wall to control the passage betweenv said bore and said port, said head and head-` sageway controlled by said valve, packing interposed between the plug and the wall of the'bore, said cylinder head having a chamber, a lubricant distributingplate in said chamber, means holding said plate to embrace said valve, and means for supplying lubricant to said distributing plate through said valve. y v

14. In an internal combustion engine, a cylinder having a head-wa-ll provided with a port communicating with the piston chamber, a valve seat plug in said port, said plug over the cylinder head-wall, the cylinder;`

head and the cylinder' head1-Wall stepped portions rinengagement .with onev another, the cylinde; head-wall having an inlet duct above the 'seat plug and the cylinder head having an exhaust duct above the seat plug, said seat/plug having-end surfaces adjacent to the cylinder head exposed to atmosphere pressure through said ducts, and a rotatable valve located between the cylinder head and the head-Wall and coperating with said ducts and said valve seat plu for controllin the admission and exhaustY unctions of t e engine.

v MARTIN GOLDBECK. 

